| Greenville to Orbetello | 4,812.69 mi (7,745.28 km) |
| Greenville to Oria | 5,166.41 mi (8,314.53 km) |
| Greenville to Oristano | 4,777.70 mi (7,688.97 km) |
| Greenville to Orta Nova | 5,050.94 mi (8,128.70 km) |
| Greenville to Orte | 4,864.10 mi (7,828.01 km) |
| Greenville to Ortona | 4,956.65 mi (7,976.95 km) |
| Greenville to Orvieto | 4,843.09 mi (7,794.20 km) |
| Greenville to Orzinuovi | 4,659.80 mi (7,499.22 km) |
| Greenville to Osimo | 4,876.97 mi (7,848.73 km) |
| Greenville to Ospitaletto | 4,660.89 mi (7,500.98 km) |
| Greenville to Ostuni | 5,155.42 mi (8,296.85 km) |
| Greenville to Ottaviano | 5,013.61 mi (8,068.63 km) |
| Greenville to Ovada | 4,627.85 mi (7,447.80 km) |
| Greenville to Ozieri | 4,774.34 mi (7,683.55 km) |
| Greenville to Paceco | 5,028.27 mi (8,092.22 km) |
